Ftw.subsite

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- Add ftw.publisher support for teaser portlet.
[jone]

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- Fix teaserportlet migration 1001, which did not consistently migrate.
[jone]

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- Fix UnicodeDecodeError while setting a title attr with umlauts.
[mathias.leimgruber]

- Use getattr for getting the new alt text for teaser images to
prevent us from writing a expensive upgrade step.
[mathias.leimgruber]

- Implement alt (required for accessibility) text for teaser images.
[kevin.bieri]

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- Add missing rolemap.xml (Add permission for Manager/Contributor).
[mathias.leimgruber]

- Set a caching header for teaser portlet images.
[deif]

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- Drop Plone.4.1 compatibility due to Plone-bugs which interfere with our testsetup and were only fixed in 4.2
(see: https://github.com/plone/Products.CMFPlone/pull/49)
[tschanzt]

- Fix Subsitelogoviewlet when the context are portal tools.
[tschanzt]

- Fix display issue with FileChunk instances after upgrading Plone from
4.2.x to Plone 4.3.2.
Reported in https://github.com/4teamwork/ftw.subsite/issues/39
[mathias.leimgruber]

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- Added browserview returning available languages.
[Julian Infanger]

- Refactor the language selector to be a "actionMenu" instead of a linklist
and show the language selector on the site root too, when subsites are
configured to show the site root as language.
[jone]

- Fixed problem if the subsite logo is deleted.
[Julian Infanger]

- Hide banner viewlet from folder_contents when root_only option enabled.
[jone]